OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application. e. ]+ H6 f1 I% \, J; u
/*" A& |/ G% ~: W7 e/ V
* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.$ _7 A; `: K% U8 Y6 z
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; x% U4 j1 [6 k) ~! c1 N J* O
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or1 K8 Y8 I7 J* S6 E
* modify it under the terms of the GNU General Public License as: l1 f$ ?4 M1 ^" _. Y+ e" i$ `
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.5 K9 O* `2 }& q! n7 `6 R4 D
*/
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#include <linux/module.h>
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#include <linux/init.h>( E4 D2 a; j4 d' f
#include <linux/errno.h>/ V# X9 Q! X+ l
#include <linux/types.h>3 i8 S4 P5 ^% c+ ]; k+ J
#include <linux/interrupt.h>) [2 u \! ^5 s9 ^) \2 N2 ?/ Y8 W
#include <asm/io.h>/ o; i I9 S9 a: F( o
#include <linux/moduleparam.h>- {: [ o; a% Y5 D6 e
#include <linux/sysctl.h>( s( h) |% ]% s1 L1 l
#include <linux/mm.h>) O( H0 s* k: B- n% W, u
#include <linux/dma-mapping.h>( r0 W+ k" P. x6 @ G
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#include <mach/memory.h># m- C$ j4 ^) E
#include <mach/hardware.h>
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#include <mach/irqs.h>& n5 r. e9 I! q
#include <asm/hardware/edma.h>) T) N* G6 I" S% ^0 }! ^9 }
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#undef EDMA3_DEBUG0 O3 y0 g0 \9 Y3 N6 G' C
/*#define EDMA3_DEBUG*/0 }! R4 y5 Z9 [: w7 X; k6 {
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#ifdef EDMA3_DEBUG+ Z+ B$ n. x S- j: D- q& J2 q
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN- T- J( P0 `: o0 T& F1 n
#define DMA_FN_OUT
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#endif: ]/ r6 W3 u T. B3 \; ~! q
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); f3 S. L# V# U0 k& P
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21* ]( ~3 x5 B, n& L! e
#define TCCHEN_SHIFT 226 E! e- u" p/ G) H2 h
#define ITCCHEN_SHIFT 23, u/ b/ z! i- u. g: S4 g
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static volatile int irqraised1 = 0;3 t/ B& a' A3 f9 H- g8 t/ C: r8 e
static volatile int irqraised2 = 0;8 `& D& F2 y, v9 z [) P
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ t4 u f J/ u# r9 M% n A
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 }. G- M9 L- ?+ u) M4 v
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;/ Q# \+ w$ w6 l4 z8 u$ I& |
dma_addr_t dmaphysdest1 = 0;! K; c7 w8 Z2 i5 Q# L2 B* k
dma_addr_t dmaphysdest2 = 0;$ _, Y& g6 z) g- \
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;5 o) ?3 S* m: g- A9 i, J+ o4 Z
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);4 U) H2 v: e! o) @
module_param(bcnt, int, S_IRUGO);- f% s; S$ u; S1 S
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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